package com.atguigu.lease.web.app.service.impl;


import com.atguigu.lease.common.constant.RedisConstant;
import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import com.atguigu.lease.common.utils.JwtUtil;
import com.atguigu.lease.common.utils.VerifyCodeUtil;
import com.atguigu.lease.model.entity.UserInfo;
import com.atguigu.lease.model.enums.BaseStatus;
import com.atguigu.lease.web.app.mapper.UserInfoMapper;
import com.atguigu.lease.web.app.service.LoginService;
import com.atguigu.lease.web.app.service.SmsService;
import com.atguigu.lease.web.app.vo.user.LoginVo;
import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.util.StringUtils;

import java.util.concurrent.TimeUnit;

@Service
public class LoginServiceImpl implements LoginService {
    @Autowired
    private StringRedisTemplate redisTemplate;
    @Autowired
    private SmsService smsService; //发送短信服务
    @Autowired
    private UserInfoMapper userInfoMapper;
    @Qualifier("redisTemplate")

    @Override
    public void getCode(String phone) {

        if (StringUtils.isEmpty(phone)){
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_PHONE_EMPTY);
        }

        //验证码的key
        String key = RedisConstant.APP_LOGIN_PREFIX + phone;

        //redis中是否已经包含 手机号的key
        Boolean result = redisTemplate.hasKey(key);
        if (result){ // 该手机号发送过短信
            // 继续判断是否是在一分钟内发送的信息

            //获取验证码还有多长时间过期
            Long expire = redisTemplate.getExpire(key, TimeUnit.SECONDS);

            //验证码过期时间(总的时间)
            Integer totalTime = RedisConstant.APP_LOGIN_CODE_TTL_SEC;

            if (totalTime-expire<RedisConstant.APP_LOGIN_CODE_RESEND_TIME_SEC){
                throw new LeaseException(ResultCodeEnum.APP_SEND_SMS_TOO_OFTEN);
            }

        }

        //生成随机6位验证码
        String code = VerifyCodeUtil.generateVerifyCode(6);
        //发送手机验证码
        smsService.sendSms(phone,code);

        //redis保存手机号验证码
        redisTemplate.opsForValue().set(key,code, RedisConstant.APP_LOGIN_CODE_TTL_SEC, TimeUnit.SECONDS);
    }

    @Override
    public String login(LoginVo loginVo) {
        String phone = loginVo.getPhone();
        if (!StringUtils.hasText(phone)){
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_PHONE_EMPTY);
        }

        String code = loginVo.getCode();
        if (!StringUtils.hasText(code)){
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_EMPTY);
        }

        //获取redis中的验证码
        //验证码的key
        String key = RedisConstant.APP_LOGIN_PREFIX + phone;
        String redisCode = redisTemplate.opsForValue().get(key);
        if (redisCode == null){
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_EMPTY);
        }
        if (!code.equals(redisCode)){
            throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_ERROR);
        }

        //查询phone的用户是不是已经注册为会员
        UserInfo userInfo = userInfoMapper.selectOne(new LambdaQueryWrapper<UserInfo>().eq(UserInfo::getPhone, phone));

        if (userInfo == null){ //不存在直接注册为会员
            userInfo = new UserInfo();
            userInfo.setPhone(phone);
            userInfo.setStatus(BaseStatus.ENABLE);
            userInfo.setNickname("用户-"+phone.substring(6));
            userInfoMapper.insert(userInfo); //mybatisplus 主动返回最新的id值-->赋值给当前被保存的对象的id属性中
        }

        if (userInfo.getStatus() == BaseStatus.DISABLE){
            throw new LeaseException(ResultCodeEnum.APP_ACCOUNT_DISABLED_ERROR);
        }

        //登录成功,创建token
        String token = JwtUtil.createToken(phone, userInfo.getId());


        return token;
    }
}

